The Study of Chemistry Flashcard

What is chemistry?
Chemistry is the study of matter.
What four components make up the basis for the study of chemistry?
1. composition
2. structure
3. properties
4. changes that matter undergoes
Two changes that matter undergoes are…
Physical and chemical.
Organic chemistry
The study of carbon-containing compounds.
Inorganic chemistry
The study of compounds that do not contain carbon.
Biochemistry
The study of chemical processes that occur in living things.
Physical chemistry
The study of the interaction between mass and energy.
Analytical chemistry
The study of the composition and structure of compounds.
Studying photosynthesis would be an example of studying what branch of chemistry?
Biochemistry
A property is..
Characteristic that allows us to distuingish or identify matter.
A property may be expressed as one of two things:
Qualitative or quantitative.
Description of qualities of matter based on senses.
Qualitative.
Description based on numbers and may include units of measure.
Quantitative.
The ability of a metal to be pounded into a thin sheet.
Malleability.
The ability of a metal to be pulled into a wire.
Ductility.
Temperature at which a substance changes from a liquid to a solid.
Melting point.
Temperature at which a substance boils.
Boiling point.
Amount of a substance that can be dissolved in water.
Solubility.
A physical property would be defined as…
A property of matter that can be observed without chemically altering the substance.
Matter is…
Anything that has mass, volume, and inertia.
Resistance to change in motion.
Inertia.
The four states of matter.
1. solid
2. liquid
3. gas
4. plasma
Properties of a solid.
Definite shape.
Definite volume.
Molecules are densely packed.
Properties of a liquid.
Indefinite shape.
Definite volume.
Constant slow motion.
Properties of a gas.
Indefinite shape.
Indefinite volume.
Rapid random movement.
Least dense phase of matter.
Properties of plasma.
Indefinite shape.
Indefinite volume.
Rapid random movement.
Intensive Property
A property that does not depend on the amount of matter present.
This property can be used to identify substances.
Intensive property.
Property that changes based on the amount of matter present.
Extensive property.
Most chemical properties are…
Intensive.
A change that does not chemically alter the substances.
Physical change.
A change that alters the chemical identity of a substance.
Chemical change.
If a gas changes into a liquid, it is called…
Condensation.
If a liquid turns into a gas, it is called…
Evaporation.
If a solid turns into a liquid, it is called…
Melting point (fusion).
If a liquid turns into a solid, it is called…
Freezing.
If a solid turns into a gas, it is called…
Sublimation.
If a gas turns into a solid, it is called…
Sublimation.
Rusting is the result of a(n)…
Oxidation/reduction reaction.
Chemical reactions are written in the form…
Reactants ——-> Products
(The arrow represents ‘yields’).
An aqueous solution is..
A solid or gas dissolved in H2O.
Atoms can be rearranged, but cannot be…
Created or destroyed.
A reaction where energy is released.
Exothermic.
When a solid substance forms from a reaction, it is called a..
Precipitate.
Combination of two or more pure substances physically.
Mixtures
Cannot be separated by physical means.
Pure substance
Looks same throughout.
Homogenous mixture.
A homogeneous mixture is also called a…
‘Solution’.
Table salt is an example of…
Homogenous mixture
Has variable composition throughout.
Heterogeneous mixture
Milk is an example of a…
Heterogeneous mixture
2 or more elements combined chemically.
Compound
True or False:
A compound cannot be decomposed.
True: A compound can be composed if a chemical reaction occurs.
Ammonia is an example of…
A compound
Cannot be broken down by chemical means.
Element
One element or single atom.
Monatomic
2 atoms of the same element.
Diatomic
03 is an example of…
A Triatomic, which is ozone.
3 atoms of the same element.
Triatomic
2 or more fames of the same element.
Allotrope
02 and 03 are an example of..
Different allotropes.
Chromotography
Separation of a mixture based on polarity and the attraction of the substance to the mobile phase vs. stationary phase
This method of separation is used to separate blood.
Centrifuge
Centrifuge
High-speed spinning used to separate mixtures based on density.
Separation of homogeneous liquid mixtures based on boiling point differences.
Distillation
Distillation is only used on what kind of mixture?
Homogeneous
Used to separate a solid from an aqueous solution.
Evaporation
How does one filtrate a heterogeneous mixture?
With a funnel and filter paper.
Used to separate solids from a heterogeneous mixture.
Filtration
Filtration is only used to separate what kind of mixture?
Heterogenous Mixture
Separate a mixture based on magnetism.
Magnetic Properties
Chemical methods are used to break compounds down into their component ________.
Elements
When used to break down a compound, what usually has to happen for decomposition to occur?
Extreme heat
When used to break down a compound, what usually has to happen for decomposition to occur?
Extreme heat
Hydrolysis is also known as..
Electrolysis
A breakdown of water using electricity.
Hydrolysis/Electrolysis.
Solutions are made up of (1) dissolved in a (2).
1. Solute
2. Solvent
Acid turns ___ litmus paper ___.
blue
red
Bases produce what in a solution?
Hydroxide
Acids produce what in a solution?
Hydrogen ion
Acids are also…
Electrolytes
What kind of flask is used in distillation?
Florence Flask

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